PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-14:43:10
G02     206.1          41.4               15.0 +/-    0.94      21.3 +/-    0.94  0.050 / 0.080
G06     145.3          76.1               11.8 +/-    0.59      12.1 +/-    0.59  0.050 / 0.080
G12     311.8          21.2                7.5 +/-    3.27      16.0 +/-    3.27  0.140 / 0.240
G17     45.3           41.4                9.0 +/-    1.07      12.7 +/-    1.07  0.090 / 0.160
G19     20.0           59.1                9.9 +/-    0.93      11.3 +/-    0.93  0.040 / 0.050
G24     290.8          40.2                8.7 +/-    1.56      12.6 +/-    1.56  0.030 / 0.050
G28     110.2          25.4               10.9 +/-    1.44      21.0 +/-    1.44  0.040 / 0.090